diff --git a/ets2panda/checker/ETSAnalyzer.cpp b/ets2panda/checker/ETSAnalyzer.cpp
index 655a54e91b94636ec09877a28918932a445b903b..2fe6c6a4a9e5c2de34726992c18d1cbdf7db804b 100644
--- a/ets2panda/checker/ETSAnalyzer.cpp
+++ b/ets2panda/checker/ETSAnalyzer.cpp
@@ -2901,9 +2901,11 @@ checker::Type *ETSAnalyzer::Check(ir::AnnotationDeclaration *st) const
 
     auto baseName = st->GetBaseName();
     if (!baseName->IsErrorPlaceHolder()) {
-        auto *annoDecl = baseName->Variable()->Declaration()->Node()->AsAnnotationDeclaration();
-        if (annoDecl != st && annoDecl->IsDeclare()) {
-            checker->CheckAmbientAnnotation(st, annoDecl);
+        if (baseName->Variable()->Declaration()->Node()->IsAnnotationDeclaration()) {
+            auto *annoDecl = baseName->Variable()->Declaration()->Node()->AsAnnotationDeclaration();
+            if (annoDecl != st && annoDecl->IsDeclare()) {
+                checker->CheckAmbientAnnotation(st, annoDecl);
+            }
         }
     }
 
diff --git a/ets2panda/ir/statements/annotationDeclaration.cpp b/ets2panda/ir/statements/annotationDeclaration.cpp
index 6444bc9758021d6099910af5b5bc2d204e8c043c..2011ac161a5cd7b5f218530f4357d71ff18f0cf6 100644
--- a/ets2panda/ir/statements/annotationDeclaration.cpp
+++ b/ets2panda/ir/statements/annotationDeclaration.cpp
@@ -111,7 +111,14 @@ Identifier *AnnotationDeclaration::GetBaseName() const
     if (expr_->IsIdentifier()) {
         return expr_->AsIdentifier();
     }
-    return expr_->AsETSTypeReference()->Part()->GetIdent();
+    auto *part = Expr()->AsETSTypeReference()->Part();
+    if (part->Name()->IsIdentifier()) {
+        return part->Name()->AsIdentifier();
+    }
+    if (part->Name()->IsTSQualifiedName()) {
+        return part->Name()->AsTSQualifiedName()->Right();
+    }
+    return nullptr;
 }
 
 AstNode *AnnotationDeclaration::Construct(ArenaAllocator *allocator)
diff --git a/ets2panda/test/ast/compiler/ets/annotation_tests/annotation_for_bad_target.ets b/ets2panda/test/ast/compiler/ets/annotation_tests/annotation_for_bad_target.ets
new file mode 100644
index 0000000000000000000000000000000000000000..e3deff1d62d3ad1055db607884d901f6d128a532
--- /dev/null
+++ b/ets2panda/test/ast/compiler/ets/annotation_tests/annotation_for_bad_target.ets
@@ -0,0 +1,23 @@
+/*
+ * Copyright (c) 2025 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+*/
+
+@interface
+this.context;
+
+/* @@? 17:1 Error SyntaxError: Identifier expected. */
+/* @@? 17:1 Error SyntaxError: Invalid annotation name. */
+/* @@? 17:1 Error SyntaxError: Expected '{', got 'this'. */
+/* @@? 17:5 Error SyntaxError: Identifier expected, got '.'. */
+/* @@? 17:13 Error SyntaxError: Missing type annotation for property 'context'. */